Suppose we are making an aqueous solution involving the dissolving of a solid solute. (a) Which is directly measurable: the volume of the solution or the number of particles of the solute? (Only one is di- rectly measurable.) Suggest a practical means of how that property of the solution would be measured in an equipped chemical laboratory. (b) The other property mentioned in (a) is not directly measurable. However, mass is another property that is directly measurable in an equipped chemical laboratory that leads to the knowledge of the indirectly-measurable property mentioned in part (a). What “conversion factor” relates mass to the indirectly-measurable property that is needed if you are going to determine the molar concentration of the solution?